Literary usage of Hamburgs

Below you will find example usage of this term as found in modern and/or classical literature:

1.Annual Report by Ohio State Board of Agriculture (1876)"... of golden-spangled hamburgs 4 Second best pair of golden-spangled hamburgs 2
Best pair of silver-spangled hamburgs 4 Second best pair of silver-spangled ..."

2.Contributions by Massachusetts Institute of Technology Sanitary Research Laboratory and Sewage Experiment Station (1910)"... hamburgs IM NEUNZEHNTEN JAHRHUNDERT In 1901 there appeared a comprehensive
treatise on the "Sanitary History of Hamburg in the Nineteenth Century," ..."

3.Poultry-keeping by Arthur Roland (1879)"hamburgs, also, are capital layers, but these as well require a good range; they
are also hardy. Polands require a dry soil to flourish. ..."

5.Report of the Secretary of Agriculture by United States Dept. of Agriculture (1871)"Layers of small eggs, averaging 9 to 10 to a pound : hamburgs. 5. ... New York,
says : "There is little doubt that the hamburgs, Silver spangled and Black, ..."

6.Dr. Chase's Recipes: Or, Information for Everybody; an Invaluable Collection by Alvin Wood Chase, William Wesley Cook (1920)"Layers of small eggs, averaging 9 to 10 to a pound— hamburgs. 5. Number of Eggs.
Great layers—hamburgs, Spanish, Leghorns and Polands. 6. Incubation. ..."